/*
 * Copyright 2019 the original author or authors.
 *
 * Licensed under the Apache, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at  http://www.gnu.org/licenses/lgpl-3.0.html
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package net.minidev.json;

public class JSONUtil {
    @SuppressWarnings({"unchecked", "rawtypes"})
    public static Object convertToStrict(Object obj, Class<?> dest) {
        if (obj == null) {
            return null;
        }
        if (dest.isAssignableFrom(obj.getClass())) {
            return obj;
        }
        if (dest.isPrimitive()) {
            if (dest == int.class) {
                if (obj instanceof Number) {
                    return ((Number) obj).intValue();
                } else {
                    return Integer.valueOf(obj.toString());
                }
            } else if (dest == short.class) {
                if (obj instanceof Number) {
                    return ((Number) obj).shortValue();
                } else {
                    return Short.valueOf(obj.toString());
                }
            } else if (dest == long.class) {
                if (obj instanceof Number) {
                    return ((Number) obj).longValue();
                } else {
                    return Long.valueOf(obj.toString());
                }
            } else if (dest == byte.class) {
                if (obj instanceof Number) {
                    return ((Number) obj).byteValue();
                } else {
                    return Byte.valueOf(obj.toString());
                }
            } else if (dest == float.class) {
                if (obj instanceof Number) {
                    return ((Number) obj).floatValue();
                } else {
                    return Float.valueOf(obj.toString());
                }
            } else if (dest == double.class) {
                if (obj instanceof Number) {
                    return ((Number) obj).doubleValue();
                } else {
                    return Double.valueOf(obj.toString());
                }
            } else if (dest == char.class) {
                String asString = dest.toString();
                if (asString.length() > 0)
                    return Character.valueOf(asString.charAt(0));
            } else if (dest == boolean.class) {
                return (Boolean) obj;
            }
            throw new RuntimeException("Primitive: Can not convert " + obj.getClass().getName() + " to "
                    + dest.getName());
        } else {
            if (dest.isEnum()) {
                return Enum.valueOf((Class<Enum>) dest, obj.toString());
            }
            if (dest == Integer.class) {
                if (obj instanceof Number) {
                    return Integer.valueOf(((Number) obj).intValue());
                } else {
                    return Integer.valueOf(obj.toString());
                }
            }
            if (dest == Long.class) {
                if (obj instanceof Number) {
                    return Long.valueOf(((Number) obj).longValue());
                } else {
                    return Long.valueOf(obj.toString());
                }
            }
            if (dest == Short.class) {
                if (obj instanceof Number) {
                    return Short.valueOf(((Number) obj).shortValue());
                } else {
                    return Short.valueOf(obj.toString());
                }
            }
            if (dest == Byte.class) {
                if (obj instanceof Number) {
                    return Byte.valueOf(((Number) obj).byteValue());
                } else {
                    return Byte.valueOf(obj.toString());
                }
            }
            if (dest == Float.class) {
                if (obj instanceof Number) {
                    return Float.valueOf(((Number) obj).floatValue());
                } else {
                    return Float.valueOf(obj.toString());
                }
            }
            if (dest == Double.class) {
                if (obj instanceof Number) {
                    return Double.valueOf(((Number) obj).doubleValue());
                } else {
                    return Double.valueOf(obj.toString());
                }
            }
            if (dest == Character.class) {
                String asString = dest.toString();
                if (asString.length() > 0) {
                    return Character.valueOf(asString.charAt(0));
                }
            }
            throw new RuntimeException("Object: Can not Convert " + obj.getClass().getName() + " to " + dest.getName());
        }
    }

    @SuppressWarnings({"unchecked", "rawtypes"})
    public static Object convertToX(Object obj, Class<?> dest) {
        if (obj == null) {
            return null;
        }
        if (dest.isAssignableFrom(obj.getClass())) {
            return obj;
        }
        if (dest.isPrimitive()) {
            if (obj instanceof Number) {
                return obj;
            }
            if (dest == int.class) {
                return Integer.valueOf(obj.toString());
            } else if (dest == short.class) {
                return Short.valueOf(obj.toString());
            } else if (dest == long.class) {
                return Long.valueOf(obj.toString());
            } else if (dest == byte.class) {
                return Byte.valueOf(obj.toString());
            } else if (dest == float.class) {
                return Float.valueOf(obj.toString());
            } else if (dest == double.class) {
                return Double.valueOf(obj.toString());
            } else if (dest == char.class) {
                String asString = dest.toString();
                if (asString.length() > 0)
                    return Character.valueOf(asString.charAt(0));
            } else if (dest == boolean.class) {
                return (Boolean) obj;
            }
            throw new RuntimeException("Primitive: Can not convert " + obj.getClass().getName() + " to "
                    + dest.getName());
        } else {
            if (dest.isEnum()) {
                return Enum.valueOf((Class<Enum>) dest, obj.toString());
            }
            if (dest == Integer.class) {
                if (obj instanceof Number) {
                    return Integer.valueOf(((Number) obj).intValue());
                } else {
                    return Integer.valueOf(obj.toString());
                }
            }
            if (dest == Long.class) {
                if (obj instanceof Number) {
                    return Long.valueOf(((Number) obj).longValue());
                } else {
                    return Long.valueOf(obj.toString());
                }
            }
            if (dest == Short.class) {
                if (obj instanceof Number) {
                    return Short.valueOf(((Number) obj).shortValue());
                } else {
                    return Short.valueOf(obj.toString());
                }
            }
            if (dest == Byte.class) {
                if (obj instanceof Number) {
                    return Byte.valueOf(((Number) obj).byteValue());
                } else {
                    return Byte.valueOf(obj.toString());
                }
            }
            if (dest == Float.class) {
                if (obj instanceof Number) {
                    return Float.valueOf(((Number) obj).floatValue());
                } else {
                    return Float.valueOf(obj.toString());
                }
            }
            if (dest == Double.class) {
                if (obj instanceof Number) {
                    return Double.valueOf(((Number) obj).doubleValue());
                } else {
                    return Double.valueOf(obj.toString());
                }
            }
            if (dest == Character.class) {
                String asString = dest.toString();
                if (asString.length() > 0) {
                    return Character.valueOf(asString.charAt(0));
                }
            }
            throw new RuntimeException("Object: Can not Convert " + obj.getClass().getName() + " to " + dest.getName());
        }
    }


    public static String getSetterName(String key) {
        int len = key.length();
        char[] b = new char[len + 3];
        b[0] = 's';
        b[1] = 'e';
        b[2] = 't';
        char c = key.charAt(0);
        if (c >= 'a' && c <= 'z') {
            c += 'A' - 'a';
        }
        b[3] = c;
        for (int i = 1; i < len; i++) {
            b[i + 3] = key.charAt(i);
        }
        return new String(b);
    }

    public static String getGetterName(String key) {
        int len = key.length();
        char[] b = new char[len + 3];
        b[0] = 'g';
        b[1] = 'e';
        b[2] = 't';
        char c = key.charAt(0);
        if (c >= 'a' && c <= 'z') {
            c += 'A' - 'a';
        }
        b[3] = c;
        for (int i = 1; i < len; i++) {
            b[i + 3] = key.charAt(i);
        }
        return new String(b);
    }

    public static String getIsName(String key) {
        int len = key.length();
        char[] b = new char[len + 2];
        b[0] = 'i';
        b[1] = 's';
        char c = key.charAt(0);
        if (c >= 'a' && c <= 'z') {
            c += 'A' - 'a';
        }
        b[2] = c;
        for (int i = 1; i < len; i++) {
            b[i + 2] = key.charAt(i);
        }
        return new String(b);
    }
}
